631297089 has 6 divisors (see below), whose sum is σ = 911873586. Its totient is φ = 420864720.

The previous prime is 631297067. The next prime is 631297103. The reversal of 631297089 is 980792136.

631297089 is a `hidden beast` number, since 631 + 2 + 9 + 7 + 0 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 330621489 + 300675600 = 18183^2 + 17340^2 .

It is not a de Polignac number, because 631297089 - 2⁷ = 631296961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631297039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35072052 + ... + 35072069.

It is an arithmetic number, because the mean of its divisors is an integer number (151978931).

Almost surely, 2^631297089 is an apocalyptic number.

It is an amenable number.

631297089 is a deficient number, since it is larger than the sum of its proper divisors (280576497).

631297089 is a wasteful number, since it uses less digits than its factorization.

631297089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70144127 (or 70144124 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 631297089 is about 25125.6261414517. The cubic root of 631297089 is about 857.8498155963.

The spelling of 631297089 in words is "six hundred thirty-one million, two hundred ninety-seven thousand, eighty-nine".